| 密闭取心技术在油气田开发调整中的应用 |
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| 引用本文： | 贾振尧,范红康. 密闭取心技术在油气田开发调整中的应用[J]. 断块油气田, 1995, 0(2) |
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| 作者姓名： | 贾振尧 范红康 |
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| 作者单位： | 中原石油勘探局钻井工艺研究院!河南省濮阳市457001(贾振尧),中原石油勘探局钻井工艺研究院(范红康) |
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| 摘 要： | 密闭取心在油田的注水开发中,是取得准确的含油水饱和度的一种方法,由于长期注水开发,目前地层孔隙压力发生了很大的变化,油层含水高,密闭取心指标很低,而且在高孔渗地层,密闭率也无法保证。本文根据多年的密闭取心经验,分析了9口井的资料,提出了在高孔渗、高含水、低孔隙压力地层中先期污染是影响密闭率的重要因素。并建议研究低污染钻头,以及选择新的示踪剂或改进化验方法提高资料的准确度。
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| 关 键 词： | 密闭取心 密闭率 渗透率 先期污染 后期污染 |
The Technology of Closed-Coring Applied to Development and Adjustment in Oil & Gas Fields |
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| Jia Zhenyao,Fan Hongkang. The Technology of Closed-Coring Applied to Development and Adjustment in Oil & Gas Fields[J]. Fault-Block Oil & Gas Field, 1995, 0(2) |
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| Authors: | Jia Zhenyao Fan Hongkang |
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| Abstract: | The technology of closed-coring is one of the methods that can get correct oil-water saturation in the development with Waterflooding. Formatim pressure has been changing and water cut increasing with long-term water flooding. These are reasons why the closed-coring efficiency are affected at present, especially in high-permeability formations. This paper presents a important factor which affects closed-coring in the high-permeability and high water cut as well as low pressure formations,to be called "initial pollution". The authors suggest that antipollution bits should be manufactured and new tracers choosed. At same time,inspection methods should also be improved to increase the accuracy of materials. |
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| Keywords: | Closed-coring Sealed efficiency Permeability Initial pollution Final pollution |
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